A biochemistry student wants to make an acidic buffer with pH of 4.20.They will start with 250 mL of a 0.5 M acetic acid (HC,H,O,) solution. Acetic acid has a pka of4.75. There are two ways to make this buffer.1.1The student is given 250 mL of a 0.5 M acetic acid (HC,H,O,) solution. What mass(in g) of sodium acetate (NaC,H,O;: 82.03 g/mol) should they add to make this a solution withpH of 4.20? Round your answer to 3 significant digits. Assume that dissolving the solid will notchange the volume of the solution.g of Nac,H,O;1.2The lab is currently out of sodium acetate. A friend suggests using sodiumhydroxide. How does adding sodium hydroxide to an acetic acid solution make a buffersolution? Explain using a chemical equation. No calculation needed.

Answered: Image /qna-images/answer/a8dcc6a8-e1e0-43ac-a2f9-51a67ea5c510.jpgWhen a strong base (NaOH) is added to a buffer solution, the hydroxide ions are consumed by the weak acid forming water and the weaker conjugate base of the acid. The amount of the weak acid decreases while the amount of the conjugate base increases. This prevents the pH of the solution from rising, and thus pH remains the same.

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A biochemistry student wants to make an acidic buffer with pH of 4.20. hey will start with 250 mL of a 0.5 M acetic acid (HC,H,O,) solution. Acetic acid has a pka of .75. There are two ways to make this buffer. .1 The student is given 250 mL of a 0.5 M acetic acid (HC,H,O,) solution. What mass in g) of sodium acetate (NaC,H,O,: 82.03 g/mol) should they add to make this a solution with H of 4.20? Round your answer to 3 significant digits. Assume that dissolving the solid will not hange the volume of the solution. g of Nac,H,O, 2 The lab is currently out of sodium acetate. A friend suggests using sodium sydroxide. How does adding sodium hydroxide to an acetic acid solution make a buffer olution? Explain using a chemical equation. No calculation needed.

A biochemistry student wants to make an acidic buffer with pH of 4.20. hey will start with 250 mL of a 0.5 M acetic acid (HC,H,O,) solution. Acetic acid has a pka of .75. There are two ways to make this buffer. .1 The student is given 250 mL of a 0.5 M acetic acid (HC,H,O,) solution. What mass in g) of sodium acetate (NaC,H,O,: 82.03 g/mol) should they add to make this a solution with H of 4.20? Round your answer to 3 significant digits. Assume that dissolving the solid will not hange the volume of the solution. g of Nac,H,O, 2 The lab is currently out of sodium acetate. A friend suggests using sodium sydroxide. How does adding sodium hydroxide to an acetic acid solution make a buffer olution? Explain using a chemical equation. No calculation needed.

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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